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Thread: outdoor fan not starting
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15-02-2010, 02:29 PM #1
outdoor fan not starting
Hi Guys,
I'm from Bulgaria and probably a "tiny" fault has been pestering me for long time.
I have a Midea 12000 BTU,R22, on-off split air conditioner. It has only one temperature-pressure pipe sensor on the indoor coil which controls the outdoor fan operation and defrost. In heat mode when you start the air conditioner initially the outdoor fan motor starts but in a minute it stops and never comes back on, expect for when there is a thick layer of ice on the outdoor coil. When I take out the indoor coil thermister the fan stays on, but defrost is not working.
Without the outdoor fan running the system doesn't give enough heat, when the thermister is of the tube ice build up after a while (24 hours).
The problem is definitely not the charge as I have recharged the unit with new refrigerant by weight!
Pipe run is 3.5 meters.
What can be the reason for this nasty fault?Restriction in the system?
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